package homework.April_21;

public class CircularArea_Square_Area {
    public double R;
    public double Long;
    public double Wide;

    //圆面积
    public void Area(double r) {
        R = r;
        System.out.println("圆：" + (Math.PI * Math.pow(R,2)));
    }
    //长方形面积
    public void Area(double l,double w) {
        Long = l;
        Wide = w;
        System.out.println("长方形：" + (Long * Wide));
    }

}
